Subtract 7/6 from 21/72
1st number: 21/72, 2nd number: 1 1/6
21/72 - 7/6 is -7/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 6 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Likewise, for the 2nd fraction, since 6 × 12 = 72,
7/6 = 7 × 12/6 × 12 = 84/72 - Subtract the two like fractions:
21/72 - 84/72 = 21 - 84/72 = -63/72 - After reducing the fraction, the answer is -7/8
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